I've always thought "Just be yourself" as bad dating advice.
What if you suck? Then being yourself isn't really going to help you much.
Suck #1: INFPs have a tendency put things off to the last minute. That includes leaving in order to show up on a date on time.
Suck #2: INFPs usually don't like small talk. Everything is small talk. Baudrillard or Bay Watch. It doesn't matter. Everybody shows off their esoterica in some way or the other in conversation. Just because we have some deep philosophical insight on the universe doesn't mean it's going to be meaningful to anyone other than ourselves. When we want to just talk about we deem as meaningful conversation, we're just being incredibly shallow.
Suck #3: We don't give people enough time to be themselves. I find INFPs incredibly dismissive of people that don't fall within our narrow standards of "friend."
With any relationships, it comes down to one thing: what do you offer in a relationship?
INFPs are good listeners? Well, unless it's something we don't want to hear and then we run off.
INFPs are accepting of others? Well, unless they values opposed to ours.
Getting to know an INFP is like walking through a landmine. You're paranoid that you'll tread some unspoken core value. It's like walking on eggshells constantly.
That being said, I think INFPs have more potential to be more than any other MBTI type. However, INFPs have problems taking action to be more and that potential is never realized.
In order to have more, you first need to be more.
Because being yourself as you are now has only gotten you this far.